A report that shows the roles and group in the cognos

I want to see a report that is basically a list of roles and groups and users who can access cognos .
i.e, i do not want to go to the cognos connection and look at the distribution list to see the current users but instead i want to generate a report that would display such an information.

I have a similar need to generate a report of roles, groups and users. I installed the audit database functionality which gets me the user logins and activity (all event type info). Can I generate a report of all users, groups and roles regardless of whether they have accessed the system?